Add order to Boards

app/dashboards/board_dashboard.rb

@@ -11,6 +11,7 @@ class BoardDashboard < Administrate::BaseDashboard
     id: Field::Number,
     name: Field::String,
     description: Field::Text,
+    order: Field::Number,
     created_at: Field::DateTime,
     updated_at: Field::DateTime,
   }.freeze
@@ -23,6 +24,7 @@ class BoardDashboard < Administrate::BaseDashboard
   COLLECTION_ATTRIBUTES = %i[
   name
   description
+  order
   ].freeze
 
   # SHOW_PAGE_ATTRIBUTES
@@ -31,6 +33,7 @@ class BoardDashboard < Administrate::BaseDashboard
   id
   name
   description
+  order
   created_at
   updated_at
   ].freeze
@@ -41,6 +44,7 @@ class BoardDashboard < Administrate::BaseDashboard
   FORM_ATTRIBUTES = %i[
   name
   description
+  order
   ].freeze
 
   # COLLECTION_FILTERS

app/models/board.rb

@@ -1,4 +1,14 @@
 class Board < ApplicationRecord
+  after_initialize :set_order_to_last
+
   validates :name, presence: true, uniqueness: true
   validates :description, length: { in: 0..1024 }, allow_nil: true
+
+  def set_order_to_last
+    return unless new_record?
+    return unless order.nil?
+    
+    order_last = Board.maximum(:order) || 0
+    self.order = order_last + 1
+  end
 end

app/models/post_status.rb

@@ -1,4 +1,6 @@
 class PostStatus < ApplicationRecord
+  after_initialize :set_order_to_last
+
   validates :name, presence: true, uniqueness: true
   validates :color, format: { with: /\A#(?:[0-9a-fA-F]{3}){1,2}\z/ }
   validates :order, numericality: { only_integer: true, greater_than: 0 }
@@ -9,4 +11,12 @@ class PostStatus < ApplicationRecord
       .order(order: :asc)
     end
   end
+
+  def set_order_to_last
+    return unless new_record?
+    return unless order.nil?
+    
+    order_last = PostStatus.maximum(:order) || 0
+    self.order = order_last + 1
+  end
 end